Question

1) Describe what a VLAN is and how it might be important with wireless networks.

    

2) Explain why packet filtering alone is inadequate as the only form of firewall.

    

3) Describe the role of a DMZ when talking about perimeter firewalls.

    

4) Describe what a “Proxy Server” is and how it is used with firewalls.

    

5) Explain the role of a “personal “ firewall on a corporate network where there is a robust perimeter firewall.

    

6) What is the advantage of a hardware firewall over a software-only firewall?

    

7) List three software firewalls that can be installed on a Windows PC.

    

8) List three firewall appliances that can be installed in a small business. Include the manufacturer and model number

    

9) Choose two Packet Filtering best practices from our text that you think are the most important. Explain why they are the most important.

    

Answer 1

Ans: VLAN or VirtualLocal Area Network is a network which is created by combining several LAN's together in a wireless and wired medium.VLAN basically overcome the physical lmitation of the LAN due to its virtual concept allowing organizations to increasesecurity measures and reduce network latency.

Setting VLAN with WLAN has advantages to prevent eavesdropping.The longet the keythe stringer is the ncryption because alonger key is more difficultto break.

Ans2: Packet filtering does not have the capability to block network attacks. Packet filtering filters packet based on the pIp address and the destined port number only but it does not filter the malicious data which may be present during that filter which can cause severe SQL Injection attack on web applications.

Ans3:DMZ or demilitarized Zone which is also known as Perimeter Network addas an extra layer of security to an organization's local area network.It is basically a separate netwoek usedfor placing web servers, email servers, and other servers to gain access from or to the Internet.It gives extra protection in mitigating risks before they reach the

Internal networks.

Ans 4:Proxy server is a passage between you and the Internet.,Basically Firewall Proxy server helps to conduct the sessions between the sender and receiver end and it makes a two party connection into a four oarty session. Itcentralizes all activity of the application into a single server.

Ans 5:Personal firewall are designed to run and protect a single worksation. Peronal firewall have more beter logging capabilities than those found on home networks.Itcontrols network trafficto and from a single computer.

It provides the feature of IP address sheilding which that makes a single computer less chance of being hacked

Ans 6:Hardware firewall is an appliance protecting all computers which isalso known a s gateway firewall.

          It is a piece of hardware which connects all your computers to the Internet. A hardware firewall unlike

         software firewall provides more security and runs on ots own processing power which indirectly lets your

         computer to perform better.

Ans 7:The Three Software firewalls that can be installed on the computer are as follows:

           1.Norton

           2. Comodofirewall

           3. Glasswire

Ans 8: The three firewall appliances thatcan be Installed on small business are as follows:

           1.Fortigate Next generations Company Name - Fortinet

           2.Cisco Meraki MX

          3. Sonic wall TZ

Ans 9 The Two best practices of Packet Filtering are as follows:

          1.Packet filtering is basically used where there is a modest security requirements where you don't need to

          be aware of your data being lost orfear of malicious SQL injections.

          2. A packet filtering is one of the very useful device which is used to isolate one subnet from the other

              which helps to filter packet from source toits specified destination only.